Temescal Mountains

Gavilan Mining District is a gold mining district 6 miles west of Perris, California and Gavilan Hills and east of Gavilan Peak on the Gavilan Plateau in Riverside County, California. It includes only 2 mines: the Ida Leona Mine and the Gavilan Mine located within yards of each other.

Gavilan Plateau is a plateau in Riverside County, California. It lies at an elevation of 2083 feet on the north slope of the Temescal Mountains overlooking the Cajalco Valley south of Riverside, California.

The Pinacate Mining District is 5 to 8 miles southwest of Perris, California. It included the Good Hope Mine, Steele's Mine, Santa Rosa (Rosalia) Mine, Virginia or Shay Mine, Santa Fe Mine and many other smaller works like the Little Maggie Mine. It produced a total of about 104,000 ounces of gold through 1959, all from the lodes of various mines. The district declined until the mid-1930s, when attempts were made to rehabilitate the Good Hope and several other mines. These efforts were largely unsuccessful, the Good Hope mine closed when it was flooded with underground water. Only three ounces of gold were produced in the district between 1943 and 1959.

Good Hope is a census-designated place in Riverside County, California. Good Hope sits at an elevation of 1,624 feet (495 m). The 2010 United States census reported Good Hope's population was 9,192.

Good Hope Mine was the principal gold mine in the Pinacate Mining District, Riverside County, California. Good Hope Mine was reputedly begun by a Frenchman named Mache, although the washes in the area were originally placer mined by Mexicans in the 1850s during the California Gold Rush using arrastras. The Good Hope quartz vein was found in 1874. Americans later bought the mine and worked it. The mine was worked to a depth of 575 feet, with several levels 100 feet apart below the 250 foot level. The first levels, at 250 and 350 feet, extended nearly 1,000 feet in length. The 450 foot level did not extend as far.The formation in which the ore occurred is a fine, even-grained granodiorite. At the surface were several veins at distances varying from three to twenty feet. At greater depth, these branching fissures united to form an irregular vein, with a tendency to send off shoots into the surrounding rock, chiefly into the foot-wall side. The foot-wall streak often contained high grade ore. The auriferous iron sulfide was finely disseminated through the quartz.In 1881 with the arrival of the California Southern Railroad nearby at Pinacate a five-stamp mill was constructed to crush the ore from the mine and developed the underground quartz deposit. In the 1890s an eastern corporation, the Good Hope Mining Company, took control and brought in a twenty stamp mill which was powered by coal from nearby Terra Cotta, California.Ore from the Good Hope was one requiring fine crushing and very careful amalgamation and concentration. After the installation of the twenty stamp mill, water supplies were insufficient for efficient operation of the mill. The four concentrating machines were in operation, with very poor separation of sulfides. Under such conditions, it would have been better to run a ten stamp mill, which would have allowed greater extraction and increased net profits. As a result of the diminished efficiency, the tailings carried sufficient value to make them profitable to cyanide operators who subsequently worked them. Had there been less desire to maximize the volume of ore running through the mill and greater attention to efficiency, there would have remained little profit for the cyanide man.The mine produced about $2 million in gold before 1896. The mine operated steadily until about 1903. An attempt was made in the 1930s by metallurgist James M. Hyde to reopen the mine. This effort was largely unsuccessful; the Good Hope Mine closed when it was flooded with underground water.The mine site is located between Lake Elsinore and Perris just west of Highway 74 between Richard and Eugene Streets. The mine workers settled in the area which took the name of the mine and is now a populated place to the north called Good Hope.

Lake Mathews is a census-designated place in Riverside County, California. Lake Mathews sits at an elevation of 1,775 feet (541 m). The 2010 United States census reported Lake Mathews's population was 5,890.

Meadowbrook is a census-designated place in Riverside County, California. Meadowbrook sits at an elevation of 1,621 feet (494 m). The 2020 United States census reported Meadowbrook's population was 3,142, down from 3,185 at the 2010 census.

Warm Springs is a census-designated place in Riverside County, California. Warm Springs sits at an elevation of 1,365 feet (416 m). The 2010 United States census reported Warm Springs's population was 2,676.

Temescal Canyon High School is a public high school part of the Lake Elsinore Unified School District. Though it is located in Lake Elsinore, California, it also serves the areas of Canyon Lake and Horsethief Canyon. The school was opened for the 1991–1992 school year, graduating its first class in 1994.

Walker Canyon is a canyon in the Temescal Mountains, in Riverside County, California. It lies divides Alberhill Summit, on the west and the balance of the range to its east. Temescal Creek flows northward through the canyon from where it heads at 33°42′33″N 117°21′43″W in Warm Springs Valley into the upper reach of the Temescal Valley near Alberhill, California. Coming from the Temescal Mountains to the east, Gavilan Wash has its confluence with Walker Canyon near mid way along its length, and Alberhill Canyon has its confluence with Walker Canyon at its mouth. Near Lake Elsinore, California, I-15 passes between Temescal Valley and Warm Springs Valley through Walker Canyon on the east side of Temescal Creek.

Warm Springs Valley is a valley located within the city of Lake Elsinore in Riverside County, California. It lies between the main body of the Temescal Mountains to the north, east and south and the Clevelin Hills to the west. The valley was named for the warm springs that used to be found flowing there. Warm Springs Valley is located along the upper reach of Temescal Creek near Lake Elsinore its upper point is where the Elsinore Spillway Channel emerges from the gap between the Clevelin Hills and Temescal Mountains 33°42′27″N 117°21′43″W, and runs northward to the head of Walker Canyon 33°40′47″N 117°19′43″W. Its easternmost point is the gap in the mountains where State Highway 74 passes to the east toward Perris 33°42′41″N 117°19′04″W.Three tributaries of Temescal Creek flow southwestward through the valley and under Interstate 15 into the creek. These are Wasson Canyon Creek to the south near the top of the valley, Arroyo Del Toro in mid valley, and Stovepipe Wash in the north in the lower valley above the Lake Elsinore Outlets.

Rice Canyon Creek is a tributary creek or arroyo of Temescal Creek in Riverside County, California. Rice Canyon Creek has its source at the head of Rice Canyon at an elevation of 3440 feet in the Santa Ana Mountains at 33°41′54″N 117°24′11″W east of the 4313 foot peak on the north south divide of the range. It is a wash that runs down from the canyon mouth 33°41′07″N 117°27′08″W at 1631 feet to its mouth at its confluence with Temescal Creek near Alberhill, California at an elevation of 1220 feet. Rice Canyon Creek has a tributary, Bishop Canyon Creek which enters the wash on the left a little below the mouth of Rice Canyon at 33°42′05″N 117°24′07″W.Rice Canyon Creek flows in the rainy season in its upper reach but is an ephemeral arroyo in its lower reach below the narrows 0.80 miles above the canyon mouth, and flows on the surface below the narrows only after more heavy rain events, and is dry the rest of the year. Rice Canyon's creek flows during the rainy season below its narrows to its mouth but its surface flow dries up below the narrows about 0.8 miles above its mouth in the canyon during the dry season, and above that in years with severe drought conditions. However some waterholes remain even in the dry years in the upper reach. Much of the wash in modern times has been interrupted by clay mining operations that stops the surface flows of water from Rice Canyon Creek from reaching Temescal Creek.